Clutch.



A. D. ADRIANGE'.

CLUTCH.

APPLICATION FILED 00T. 17, 1911.

Patented July 30, 1912.

:1 SHBBTS-SHEET 1.

` Amm/.El

A. D. ADRIANGB.

CLUTCH.

APPLICATION FILED 001.17, 1911.

Patented July 30, 1912.

3 SHEETS-SHEET 2.

WITNESS/58 www/19 AITUMEY.

A. i). 'ADRIANGR CLUTCH.

APPLICATION FILED 00T. 17, 1911.

Patented July 30, 1912.

3 SHEETS-SHEET 3.

WIT/VESSES UNITED sTATEs rATENT oEEIcE.

ADRIAND. Animation, 4or NEW YORK, N. IY."

Specification of Letterslatent.

Application filed October 17, ^1911.\ SerialNo. 655,132.`

To all whom t may concern:

Be it knownthat I, ADRIAN D. YADRIAANcn a citizen of the, United Statearesidingvat New York cityinfthe county ofNew York;

and State of NewYork, have inventedfcertain i new. and iuseful- Improvements in Clutches, ofy which ithe following is.` a lspeciication.

This invention relates to hoisting and similar mechanisms, and ithas referencey particularly yto hoist-ingapparatus of the kind wherein the hoisting,operationffis-autoj matically arrested after having `proceeded to a predetermined extent@ According to my inventionwthew driven member -`of a clutch `having its "members, drivingand driven, `cidevby sideshas a ter` minating or non-continuous'fcam wayfac ing Laway from kthe. driving clutch member, and means is employed which, engaglngfsald tending toward the driving member to `form a stop with which the pressing; means engages 1 when the: `cam `way `has cleared 1 the same with the eii'ect of locking the ``driven clutch member against re-rotation under the pull ofI the load; and preferably: inwthisv adaptation a checking `shoulder is alsof` formed onthe driven clutch member, such shoulder being soldisposed yas toengagel the-- pressing means substantiallyat the momentv when itis cleared bythe cam `way and arrest l thedriven clutch memberprecisely at a prel determined point in its rot-ation` Further, the-cam way iswformed sofaswtopresentato` the pressing means a `rise progressing :in ythe direction of 11e-rotation ofthe driven clutch* A member, whereby the pressing means may be 'utilized' to ease Athe 1 backward rotation of the driven clutch memberv under the pull Vof thel i load. Again, meanswis :provided `for limiting the action of thelpressure applying, means upon the cam-way 'having'. cleared the I haveillustrated my invention in `the ac-f companying vdrawingsg` infoonnectionfwithI La f farm'mach-neifformngithasubjfeotseof others..

said machine,` providedv with f the improved hoistingmechanism; FigveQ a plan view of4 what-1s shown in Fignl Fig.. '3 a plan view` showinglthe` hoisting mechanism on` a larger scale,a certain parti beingremoved; Fig. 4; an'insideffface `vlew offfonel of the driving clutch members; F1g.r5 a-sectlonal view on the line .fnof Fig. 1; Fig. 6 anoutside face view ofthe1 complementary clutch member gf Figsxq andSfelevations of the clutch member shown Jin Fig. 6 looking toward the periphery thereof from"` different points;

Fig.9 a planview of the Sfoot'lever; Fig..-

10 a ragment'fof one ofthevclutchcontrolling z-levers; and, Fig. -11 is a -detail view lllustratmgltheconnection between- `onewoif the-controllmg levers land a T-link connect# ing vsaidlever with the operating lever.y

In the drawings-a designates ya traction engine-,and aharrow attachment pivotally Patented J 1115r 30,1912."

applications 1 filed by me;a said `drawings showing, Figure b1, a side elevationy of ther supportedon= the-rotary shaft c andconstituting-,the load 7 which at' times it is'nec-V essary to elevateand then lower-gradually' and withouty undue: shock.l 'f

d==designates two driving. clutch members securedhonf-the'inner endsfofthe hubs c ofy gears f which :are l'jonrnaled'in hangers g and meshawithpinionsh `on the shaft o connectedbya transmissionmechanism c' with a suitably driven-driving sha-ft j. It is as-4 sumedthat the=parts dto j are normallyfin rotation. Ontherahubfeof'each gear is a driven clutch member l7c 'freely revoluble thereon, Z-

beingxla :collar` lixed; on "the hub `and retaining the ldriven `clutch member in place.l The 1 clutchmemberk is= normally held outl of bend by' 1thesspringpressed 'plugsk m ar-l ranged in oneof said Amembers and bearing," aga-inst the f other the f clutch*A shown Vis` of the l.friction type; the friction grip being clutching :engagement withithe clutch memafforded by wood, liber,cork orotherfsuit# able friction gripfdevices Vafset inthe face of one clutch "member in position-to imp'inge against. the Aadjoining .'face of i the other; l

The :clutch-members lo' are preferably thereon and attachedl at their` -free ends to they loadbeinggfinwthe `:present instance passed:overfthefpulleys gm It will be fob-` served .-th'at5 upon :pressure beingseapplied: 'to l forcer'f'ithe: clutchzamembersflc japart; that is,

grooved, asat-0,=for theu reception ofthe" cables` p `or 1 other fleiriblelconnections wound each against its complementary clutch member cl, the clutch members 7c will be rotated by the clutch members d, vthe cables wound up on the drums afforded by the clutch members k and the load raised. The movement of the clutch members .7c into clutching engagement with the clutch members d is effected from a foottreadle 11 forming an operating lever and fulcrumed on a shaft s througl'i the medium of a T-link t pivotally connected with the foot lever and having the cross arms t thereof passed freely through studs u swiveled in the long arms o of the controlling levers o fulcrumed in brackets w secured on the frame of the traetion engine and having their short arms v2 provided with rollers o3 to engage said clutch members 7c in the manner now to be described.

.Each clutch member 7c on the surface thereof facing away from the clutch member Z has a terminating or non-continuous Y concentric cam-way e., a cam-way which extends but part way around the axis of rotation of said clutch member) adj oined at its terminus by a surface y extending toward the driving clutch member to form a stop, said surface being in the adaptation shown one side of a recess a. The other side of said recess a merges into a shoulder 2 forming one face of a projection 3 on the clutch member, the disposition of said shoulder being such that in t-he rotation of the clutch member it will engage the roller o3 so that the latter will positively stop the rotation of t-he clutch member. The clutch member 7c under the impulse of clutch memf ber f/Z rotates in the direction of the arrows shown in the drawings, and the cam way m is a cam surface whose rise progresses reversely to the above indicated direction of ret-ation of the clutch member 7c (Figs. 3 and In operation, the clutch members (Z being in rotation, upon pressure being applied to the foot treadle 1^ sufficient to cause levers v to press the clutch membersc into clutching engagement with clutch members d, the former will be rota-ted, winding the cables thereon and therefore raising the load. This Awill continue until the rollers e3 reach the recesses a of the clutch members 7c when the rotary motion of the clutch members 7c will cease, the shoulders 2 of said clutch members having been brought up against the rollers @a of the levers o. At this time, it is desirable to provide means for limiting the pressing action of the pressure means, including the levers fv, so that the operator will not inadvertently continue the clutch members in clutch engagement with each other: Hence each bracket w is formed at 4 with a stop which the short arm o2 of the adjoining lever impinges against, preventing its exerting further pressure on member c calculated to reestablish its clutching engagement with clutch member d. When it is desired, now, to allow the load to lower, the pressure on the foot treadle is relaxed until the rollers o3 clear the recesses o, the load of course at this time tending to rotate the clutch members 7c backward. By now removing the pressure from the treadle gradually the operator may ease the fall of the load, having in this the assistance of the rise of the cam surfaces afforded by the cam way w of each clutch member 1, against which the roller 'v3 is bearing, and the coacting resistance afforded by the clutch member al with which at this time the clutch member le is of course held in wiping contact.

By employing the anti-friction bearing, such as rollers o3, as its contact part, the release of the clutch member 7c from the position in which it is held by the lever when it engages the stop g/ is accomplished without binding and instantly upon relaxation of the pressure.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. A hoisting mechanism comprising rotary driving and driven clutch members arranged side by side, and means, exerting pressure from opposite sides of 4and upon said members and relatively to which said members are rotary, for forcing said members into clutching engagement with each other, the part of the surface of the driven clutch member receiving the impact of said means being a terminating cam-way extending around the axis of rotation of said member, substantially as described.

2. A hoisting mechanism comprising rotary driving and driven clutch members arranged side by side, and means, exerting pressure from opposite sides of and upon said members and relatively to which said members are rotary, for forcing said members into clutching engagement with each other, the part of the surface of the driven clutch member receiving the impact of said means being a terminating cam-way extending around the axis of rotation of said member, and being adjoined at its terminus by a surface extending toward the driving clutch member and thereby forming a stop for engagement by said means to restrain the driven clutch member against re-rotation, substantially as described.

3. A hoisting mechanism comprising rotary driving and driven clutch members arranged side by side, and means, exerting pressure from opposite sides of and upon said members and relatively to which said members are rotary, for forcing said members into clutching engagement with each other, the part of the surface of the driven 'clutch member receiving the impact of said means being a terminating cam-way extending around the axis of rotation of said member, said driven clutch member having a checking shoulder engageable with said means and substantially coinciding with the terminus of the cam-way, substantially as described.

t. A hoisting mechanism comprising rotary driving and driven clutch members arranged side by side, means, exerting pressure from opposite sides of and upon said members and relatively to which said members are rotary, for forcing said members into clutching engagement with each other, the part of the surface of the driven clutch member receiving the impact of said means being a terminating cam-way extending around the axis of rotation of said member, and means for limiting the pressure of the iirst means upon said cam-way having cleared the pressureexerting means in the rotation of the driven clutch member, substantially as described.

5. A hoisting mechanism comprising rotary driving and driven clutch members arranged side by side, means, exerting pressure from opposite sides of and upon said members and relatively to which said members are rotary, for forcing said members into clutching engagement with each other, the part of the surface of the driven clutch member receiving the impact of said means being a terminating cam-way extending around the axis of rotation of said member, and being adjoined at its terminus by a surface extending toward the driving clutch member and thereby forming astop for engagement by said means to restrain the driven clutch member against re-rotation,

and means for limiting the pressure of the first means upon the same having engaged said stop, substantially as described.

6. A hoisting mechanism comprising rotary driving and driven clutch members arranged coaxially side by side, the driven clutch member having a cam-way facing away from the driving clutch member, extending around the axis of rotation and formed with a rise progressing in the direction opposite to that assumed by the driven clutch member under the driving impulse of the driving clutch member, and means, engaging said cam-way, for pressing said clutch members into clutching engagement with each other, substantially as described.

7. A hoisting mechanism comprising rotary driving and driven clutch members arranged coaxially side by side, the driven clutch member having a terminating camway facing away from the driving clutch member and extending around the axis of rotation and a surface extending toward the driving clutch member at the terminus of the cam-way to form a stop, and means for pressing said clutch members together into clutching engagement with each other including an anti-friction bearing impinging against said cam-way and, in the rotation of the driven member, adapted to engage said stop and lock the driven member against rerotation, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

ADRIAN D. ADRIANCE.

Witnesses:

FLORENCE A. GEWEHN, PHILIP A. MASTER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, 1). C. 

